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United States Patent | 5,509,093 |
Miller ,   et al. | April 16, 1996 |
This invention relates to temperature compensated FFPs with improved means for alignment of optical fibers. The invention provides ferrule holders with shaped ferrule passageways, as components of FFP alignment fixtures, in which optical fiber ends can be readily aligned using the ferrule rotary alignment method. The ferrule holders have a composite structure facilitating temperature compensation required for applications to PZT-tuned FFPs. The ferrule holder has a core and peripheral region made of materials having different thermal expansion coefficients. The holder core in contact with the ferrule is made of a material having a thermal expansion coefficient substantially matched to that of the ferrule material. In addition, ferrule holders are provided with a means for changing the points of contact between a secured ferrule and its holder which allows wavelength drift as a function of temperature in FFPs to be adjusted.
Inventors: | Miller; Calvin M. (Atlanta, GA); Miller; Jeffrey W. (Symrna, GA) |
Assignee: | Micron Optics, Inc. (Atlanta, GA) |
Appl. No.: | 287823 |
Filed: | August 9, 1994 |
Current U.S. Class: | 385/27; 385/19; 385/62; 385/72; 385/84; 385/137 |
Intern'l Class: | G02B 006/26; G02B 006/42 |
Field of Search: | 385/60,62,66,72,78,81,84,136,137,27,19 |
4258977 | Mar., 1981 | Lukas | 350/96. |
4448482 | May., 1984 | Lethlaen | 350/96. |
4490007 | Dec., 1984 | Murata | 350/96. |
4629284 | Dec., 1986 | Malavieille | 350/96. |
4787701 | Nov., 1988 | Stenger | 350/96. |
4932033 | Jun., 1990 | Miyazawa et al. | 372/46. |
5037179 | Aug., 1991 | Bortolin | 350/96. |
5159655 | Oct., 1992 | Ziebol et al. | 385/81. |
5179608 | Jan., 1993 | Ziebol et al. | 385/72. |
5381500 | Jan., 1995 | Edwards et al. | 385/62. |
5425039 | Jun., 1995 | Hsu et al. | 385/73. |
Foreign Patent Documents | |||
8704721 | Jul., 1987 | DE. | |
2106706 | Apr., 1983 | GB | . |
Patent Abstracts of Japan, vol. 13, No. 46 (E-711) Feb. 2, 1989 JP-A-63 241 978. Patent Abstracts of Japan, vol. 13, No. 371 (E-807), Aug. 17, 1989 JP-A-01 124 279. Patent Abstracts of Japan, vol. 14, No. 391 (E-968) Aug. 23, 1990, JP-A-02 143 580. Patent Abstracts of Japan, vol. 12, No. 13 (E-573) Jan. 14, 1988, JP-A-62 173 786. Patent Abstracts of Japan, vol. 17, No. 528 (E-1437) Sep. 22, 1993, JP-A-05 145 169. |